Absolutely the best price and you get two to boot! The new main jet did the trick. Go to Mikuni's website and they have instructions on how to tune and distinguish what parts you may have to change to proper tune the carb. If you change your exhaust pipes this is a must do. Either that or you may be running to lean and that is not good.As usual DK is the best place to buy and get excellent service. Keep up the good work DK.